CN116783914A - Terminal, system and communication method - Google Patents

Abstract

The terminal is provided with: a control unit generating capability information including a power class of the terminal; and a transmitting unit that transmits the capability information. For the power class, a maximum TRP (Max) (total radiated power (Total Radiated Power)), a maximum peak (Max peak) EIRP (equivalent omni-directional radiated power (Equivalent Isotropic Radiated Power)), a minimum peak (Min peak) EIRP, a sphere coverage (Spherical coverage) EIRP are specified. The method for determining the predetermined value of at least one of the maximum peak EIRP and the maximum TRP in Inter-band CA (carrier aggregation (Carrier Aggregation)) is based on the relation between operating bands (operating bands) of two CCs (component carriers (Component Carrier)) constituting the Inter-band CA.

Description

Terminal, system and communication method

Technical Field

The present disclosure relates to a terminal, a system, and a communication method.

Background

In a UMTS (universal mobile telecommunications system (Universal Mobile Telecommunication System)) network, a subsequent system of long term evolution (LTE: long Term Evolution) is being discussed (non-patent document 1). Among the subsequent systems of LTE, there are systems called, for example, LTE-a (LTE-Advanced), FRA (future radio access (Future Radio Access)), 5G (fifth generation mobile communication system (5 th generation mobile communication system)), 5g+ (5G plus), new-RAT (radio access technology (Radio Access Technology); NR), and the like.

In 3GPP (third generation partnership project (3 rd Generation Partnership Project)), maximum transmission Power is defined for each Power Class (Power Class) (hereinafter, sometimes referred to as "PC") in millimeter wave bands (NR FR 2) such as Sub6 (LTE/NR FR (Frequency Range) 1) and 28GHz band or 38GHz band, which are frequencies of 6GHz or less including 3.7GHz band and 4.5GHz band.

In 3GPP, n257 (Uplink): 26500MHz to 29500MHz, downlink (Downlink): 26500MHz to 29500 MHz), n258 (Uplink: 24250MHz to 27500MHz, downlink: 24250MHz to 27500 MHz), n261 (Uplink: 27500MHz to 28350MHz, downlink: 27500MHz to 28350 MHz) and n259 (Uplink: 39500MHz to 43500MHz, downlink: 39500MHz to 43500 MHz) and n260 (Uplink: 37000MHz to 40000MHz, downlink: 37000MHz to 40000 MHz) are defined for an operating band belonging to a 28GHz band, respectively (refer to non-patent document 1).

Each terminal is set with a power level at the time of shipment, and the transmission power is controlled so as to satisfy the regulation of the transmission power of the power level at the time of transmission of the radio signal. Further, at the start of communication, each terminal notifies the base station of information indicating UE Capability (UE Capability) including a power level (hereinafter referred to as "Capability (Capability) information").

In 3GPP, sub6 is specified to be from PC1 to PC4 in power class, and FR2 is specified to be from PC1 to PC4 in power class. The PC1 of FR2 faces Fixed wireless (Fixed wireless) communication, and the PC2 of FR2 faces in-vehicle.

In Sub6, omni-directional antennas with nondirectionality are used, and each power class is specified by TRP (total radiated power (Total Radiated Power)). TRP is the aggregate value of the power radiated into space.

In FR2, directivity is formed by an array antenna, power radiation (Beam Forming) is performed, and 4 items of maximum (Max) TRP (total radiation power (Total Radiated Power)), maximum peak EIRP (equivalent omnidirectional radiation power (Equivalent Isotropic Radiated Power)), minimum peak EIRP (Min peak) EIRP, and sphere coverage (Spherical coverage) EIRP are specified for each power class for each frequency domain (refer to non-patent document 1). In addition, EIRP is a composite value of transmit power and antenna gain.

For example, in the case of PC3 (28 GHz band) of FR2, there are maximum TRP.ltoreq.23 dBm, maximum peak EIRP.ltoreq.43 dBm, minimum peak EIRP.ltoreq.22.4 dBm, spherical coverage EIRP.gtoreq.11.5 dBm,50% -tile CDF (see FIG. 3). The terminal of the PC3 controls the transmission power so as to satisfy the specifications of all four items at the time of transmission of the wireless signal.

The spherical coverage EIRP is a specification of the power (EIRP) distribution in the space around the terminal and contributes to the connectivity of the terminal with the base station, and is specified as% -tile from the upper limit of the CDF (cumulative distribution function (Cumulative Distribution Function)). For example, a spherical coverage EIRP ∈ (25.0 dBm,20% -tile CDF) for PC4 means that the EIRP is below 25dBm at the point of 20% of the CDF, i.e., exceeds 25dBm at 80% of all measurement points in space.

Prior art literature

Non-patent literature

Non-patent document 1:3GPP TS 38.101-2V16.4.0 (2020-06)

Disclosure of Invention

Problems to be solved by the invention

In 3GPP, the total power of the maximum TRP of each CC, the total power of the maximum peak EIRP of each CC, the total power of the minimum peak EIRP of each CC, and the total power of the sphere coverage EIRP of each CC are specified on the premise that radio waves are simultaneously radiated in the same direction in consecutive CCs (component carriers (Component Carrier)) of the same band in Intra-band (Intra-band) CA (carrier aggregation (Carrier Aggregation)) of FR 2.

However, in an Inter-band (CA) of FR2, a case where radio waves are simultaneously radiated in a plurality of directions from the same or mutually different antenna panels in a plurality of CCs may also be considered. Even when radio waves are radiated from one antenna panel in the same direction in different frequency bands, the directivity of the beam may vary depending on the frequency characteristics due to the different frequency bands.

Further, spatial directivity needs to be considered in calculation of EIRP or TRP.

Therefore, regarding the Inter-band CA of FR2, it is preferable to consider the direction of the radiated electric wave and to newly determine a predetermined value (hereinafter, referred to as "radiation power predetermined value") of each item such as the maximum peak EIRP. Further, the radiation power prescribed value in the Inter-band CA of FR2 is preferably determined in consideration of the relation of the operating frequency bands of the two CCs constituting the Inter-band CA.

One of the purposes of the present disclosure is: a method for determining a radiation power predetermined value in Inter band CA of FR2 in consideration of the relation between the operation frequency bands of two CCs is proposed.

Means for solving the problems

A terminal according to an embodiment of the present disclosure includes: a control unit generating capability information including a power class of the terminal; and a transmitting unit that transmits the capability information. For the power class, a maximum (Max) TRP (total radiated power (Total Radiated Power)), a maximum peak (Max peak) EIRP (equivalent omni-directional radiated power, namely (Equivalent Isotropic Radiated Power)), a minimum peak (Min peak) EIRP, and a sphere coverage (Spherical coverage) EIRP are specified, and a method of determining a specified value of at least one of the maximum peak EIRP and the maximum TRP in an Inter-band (Inter-band) CA (carrier aggregation (Carrier Aggregation)) is based on a relationship between operating bands of two CCs (component carriers (Component Carrier)) constituting the Inter-band CA.

A system according to an embodiment of the present disclosure includes: a terminal generating capability information including a power class of the terminal and transmitting the capability information; and a base station that receives the capability information, wherein a maximum value TRP (Total Radiated Power), a maximum peak value EIRP (Equivalent Isotropic Radiated Power), a minimum peak value EIRP, and a sphere coverage EIRP are defined for the power class, and a method for determining a predetermined value of at least one of the maximum peak value EIRP and the maximum TRP in the Inter-band CA (carrier aggregation (Carrier Aggregation)) is based on a relationship between operating bands of two CCs (component carriers (Component Carrier)) constituting the Inter-band CA.

A communication method according to an embodiment of the present disclosure is a communication method in which a terminal generates capability information including a power class of the terminal, for which a maximum (Max) TRP (total radiated power (Total Radiated Power)), a maximum peak EIRP (Equivalent Isotropic Radiated Power), a minimum peak EIRP, and a sphere coverage EIRP are specified, and a method for determining a specified value of at least one of the maximum peak EIRP and the maximum TRP in Inter-band CA (carrier aggregation (Carrier Aggregation)) is based on a relationship between operating bands of two CCs (component carriers (Component Carrier)) constituting the Inter-band CA.

Effects of the invention

According to the present disclosure, the radiation power prescribed value in the Inter-band CA of FR2 can be determined in consideration of the relation of the operation frequency bands of the two CCs.

Drawings

Fig. 1 is a block diagram showing an example of the configuration of a base station.

Fig. 2 is a block diagram showing a configuration example of a terminal.

Fig. 3 is a diagram showing predetermined values of respective power levels for each band of FR 2.

Fig. 4 is a diagram showing numerical examples from the scheme A1-1 to the scheme A1-3 in the scheme A1 according to one embodiment of the present disclosure.

Fig. 5 is a diagram showing, by mathematical formula, the patterns A1-1 to A1-3 in the pattern A1 according to an embodiment of the present disclosure.

Fig. 6 is a diagram showing an example of the hardware configuration of a base station and a terminal.

Detailed Description

The present disclosure is made to solve the above-described problems. One mode of the present disclosure is described below with reference to the drawings.

[ Structure of Wireless communication System ]

The radio communication system according to the present embodiment includes a base station 10 (see fig. 1) and a terminal 20 (see fig. 2). The base station 10 transmits DL signals to the terminal 20. Further, the base station 10 receives the UL signal transmitted from the terminal 20. The terminal 20 receives the DL signal transmitted from the base station 10 and transmits an UL signal to the base station 10.

[ Structure of base station 10 ]

Fig. 1 is a block diagram showing an example of the configuration of a base station 10 according to the present embodiment. The base station 10 includes, for example, a control unit 101, a transmission unit 102, and a reception unit 103.

The control unit 101 controls transmission processing in the transmission unit 102, and reception processing in the reception unit 103.

For example, control section 101 performs scheduling (e.g., resource allocation) of DL data signals transmitted on PDSCH (physical downlink shared channel (Physical Downlink Shared Channel)) and DL control signals transmitted on PDCCH (physical downlink control channel (Physical Downlink Control Channel)). Further, control section 101 performs scheduling of DL reference signals such as synchronization signals (PSS (primary synchronization signal (Primary Synchronization Signal))/SSS (secondary synchronization signal (Secondary Synchronization Signal))), CRS (Cell-specific reference signal (Cell-specific Reference Signal)), CSI-RS (channel state information reference signal (Channel State Information Reference Signal)), and the like.

Further, control section 101 performs scheduling of an UL data signal transmitted on a PUSCH (physical uplink shared channel (Physical Uplink Shared Channel)), an UL control signal transmitted on a PUCCH (physical uplink control channel (Physical Uplink Control Channel)), a random access preamble transmitted on a PRACH (physical random access channel (Physical Random Access Channel)), an UL reference signal, and the like.

Further, the control unit 101 performs access cell selection and the like of the terminal 20 based on RRM (radio resource management (Radio Resource Management)) report (report) indicating a measurement result of the reception quality included in the UL signal.

The transmission unit 102 transmits a signal (DL signal) for the terminal 20 to the terminal 20 according to the control of the control unit 101.

DL signals include DL data (also referred to as PDSCH signal) and DL control information (for example, also referred to as PDCCH signal, PDCCH includes DCI (downlink control information (Downlink Control Information)), reference signal, etc., and DL control information includes RA message (also referred to as RAR (random access response (Random Access Response)) or message (message) 2), information indicating UL resource setting (scheduling indication), NS (network signaling (Network Signaling)) and the like, for example, including TA (Timing Advance) command.

The DL control information may be notified to the terminal 20 by, for example, higher layer signaling, or may be notified to the terminal 20 by dynamic signaling such as DCI. Higher layer signaling is sometimes also referred to as, for example, RRC (radio resource control (Radio Resource Control)) signaling or higher layer (higher layer) parameters.

The reception unit 103 receives a signal (UL signal) transmitted from the terminal 20 according to the control of the control unit 101.

UL signals include UL data (sometimes also referred to as, for example, PUSCH signals), UL control information (sometimes also referred to as, for example, PUCCH signals), reference signals (for example, SRS (sounding reference signal (Sounding Reference Signal))), RA signals, and the like. The UL control information includes, for example, RRM reports.

[ Structure of terminal 20 ]

Fig. 2 is a diagram showing an example of the configuration of the terminal 20 according to the present embodiment. The terminal 20 includes, for example, a control unit 201, a transmitting unit 202, a receiving unit 203, and a measuring unit 204.

The control unit 201 controls transmission processing in the transmission unit 202, and reception processing in the reception unit 203.

For example, the control unit 201 may generate capability information indicating the capability of the terminal 20 and transmit from the transmission unit 202 to the base station 10. Further, the control unit 201 may control the transmission power of the UL signal to meet the specification of the power class of the terminal 20. Further, the control unit 201 may generate an RRM report based on the measurement result of the measurement unit 204, and transmit it from the transmission unit 202 to the base station 10.

The transmission unit 202 transmits an UL signal to the base station 10 according to the control of the control unit 201.

The reception unit 203 receives the DL signal transmitted from the base station 10 according to the control of the control unit 201.

The measurement unit 204 measures the reception quality of the signal received in the reception unit 203, and outputs the measurement result to the control unit 203. The value indicating the reception quality includes the reception power of the received signal (for example, RSRP (reference signal reception power (Reference Signal Received Power))), the reception signal strength (for example, RSSI (received signal strength indicator (Received Signal Strength Indicator))), the reception quality (for example, RSRQ (reference signal reception quality (Reference Signal Received Quality))), and the like.

[ radiation Power prescribed value in Inter-band CA ]

Next, a method for determining the radiation power specified value in Inter-band CA in FR2 will be described.

Fig. 3 is a diagram showing radiation power predetermined values for each item of each power level for each band of FR2, which is described in non-patent document 1. As shown in fig. 3, currently, in FR2, four power classes (from PC1 to PC 4) are specified in the 28GHz band and the 38GHz band, respectively. For each power class, the radiation power specification values are determined for four items of maximum TRP, maximum peak EIRP, minimum peak EIRP, spherical coverage EIRP. For example, the predetermined value of the maximum TRP in PC1 of the 28GHz band is "35dBm".

However, as described above, the conventional radiation power regulation value does not contemplate the case of radiating radio waves simultaneously in a plurality of directions in the Inter-band CA of FR 2.

Accordingly, the present inventors have proposed a new radiation power regulation value to be introduced into the Inter-band CA of FR2 based on the regulation of the existing power level of FR 2.

Next, a method of determining a predetermined value of the maximum peak EIRP is proposed, taking as an example the case of Inter-band CA using two frequency domains of the 28GHz band (1 st band) and the 38GHz band (2 nd band).

< scheme 1>

In the scheme 1, the EIRP of the 28GHz band and the EIRP of the 38GHz band at the measurement points of each beam direction are measured in the tester, the total power of the EIRP of the 28GHz band and the EIRP of the 38GHz band at the measurement points of each beam direction is calculated, and the maximum value of the total power is determined as a predetermined value of the maximum peak EIRP. That is, in the scheme 1, the 28GHz band beam and the 38GHz band beam are set to the same direction, and the predetermined value of the maximum peak EIRP is determined based on the total power of EIRP in each direction.

According to the present solution, the total power limitation of each beam in the same direction can be ensured. Thus, it can be ensured that the maximum EIRP limit specified in law of each country is not exceeded. In addition, even in the case where a limitation of the maximum EIRP is required in a specific region (for example, a hospital or the like), it is possible to ensure that the maximum EIRP limitation is not exceeded. Further, since only the total power of each beam direction is determined, there is a degree of freedom in allocation of EIRP. Therefore, one beam can be intentionally adjusted to have high power according to the distance from the base station of the connection destination, and the connectivity can be improved.

< scheme 2>

Scheme 2 is a scheme in which the EIRP of the 28GHz band and the EIRP of the 38GHz band at the measurement points of the respective beam directions are measured in a tester, and the total power of the maximum value of the EIRP of the 28GHz band and the maximum value of the EIRP of the 38GHz band is determined as a predetermined value of the maximum peak EIRP. That is, in the scheme 2, at the measurement points of the respective beam directions, the EIRP of the 28GHz band and the EIRP of the 38GHz band are measured, and the predetermined value of the maximum peak EIRP is determined based on the total power of the maximum value of the EIRP of the respective frequency domains, irrespective of the difference in the beam directions.

According to this aspect, since it is not necessary to grasp the total power of EIRP in the same direction without depending on the difference in beam direction, the terminal installation can be simplified, and a reduction in development cost can be expected. Further, although the difference in beam direction is not relied upon, since the predetermined value of the maximum peak EIRP is determined based on the total power, the total power limit of each beam can be ensured as in the case of the scheme 1.

< scheme 3>

Scheme 3 is a scheme in which the EIRP of the 28GHz band and the EIRP of the 38GHz band at the measurement points of the respective beam directions are measured in a tester, and the maximum value of the EIRP of the 28GHz band and the maximum value of the EIRP of the 38GHz band are each independently determined as a predetermined value of the maximum peak EIRP. That is, the scheme 3 determines the predetermined value of the maximum peak EIRP based on the maximum value of EIRP of each frequency domain, without depending on the difference in beam direction.

According to the present embodiment, since the maximum value of the EIRP in each frequency domain is based on the difference in beam direction, and the EIRP control is performed independently for each frequency domain, the terminal can be further simplified in installation as compared with the embodiment 2, and development cost can be reduced. In addition, since EIRP is independently specified instead of being based on total power, it is also possible to ensure EIRP allocation that is desired to be minimally guaranteed.

< scheme 4>

In the case of the scheme 4, the EIRP of the 28GHz band and the EIRP of the 38GHz band at the measurement points in the respective beam directions are measured in the tester, the total power of the EIRP of the 28GHz band and the EIRP of the 38GHz band at the measurement points in the respective beam directions is calculated, the maximum value of the total power is determined as a predetermined value of the maximum peak EIRP, and the EIRP of the 28GHz band and the EIRP of the 38GHz band in the beam direction in which the total power is the maximum is determined as a predetermined value of the maximum peak EIRP. That is, in the scheme 4, the beam of the 28GHz band and the beam of the 38GHz band are set to be in the same direction, and the predetermined value of the maximum peak EIRP is determined based on the total power of EIRP in each direction and the individual EIRP in each frequency domain of the beam direction in which the total power is largest.

According to this aspect, as in the case of the aspect 1, the total power limitation of each beam can be ensured. In addition, as in the case of the scheme 3, since the EIRP is independently defined, it is possible to ensure the EIRP allocation that is desired to be ensured at a minimum.

In the test of the case of radiating a plurality of beams, it is also possible to perform time division transmission and EIRP measurement in a band domain constituting Inter-band CA. For example, in the band of FR2, TDD (time division duplex (Time Division Duplex)) scheme is used, so in the setting (Configuration) of TDD, the setting (Configuration) of UL may be divided and used in each frequency domain, and EIRP may be measured. In particular, in an environment where a test environment of millimeter wave communication is OTA (Over-The-Air), in an environment where a plurality of frequencies are mixed, there is a possibility that measurement of a plurality of beams simultaneously radiated from a terminal is difficult due to an influence of interference waves, noise, or The like, and thus The above test method is effective. Unlike the (connected) test environment of a wired system in which an RF port to be implemented in the RF test of Sub6 is wired to a measurer and the test is implemented, the OTA test environment is a measurement system that radiates electric waves into a real space and implements the test.

The minimum Peak EIRP and the maximum Peak EIRP are the minimum value and the maximum value of the Peak EIRP, that is, the range recognized as the Peak EIRP is shown below.

The minimum peak value EIRP is less than or equal to the peak value EIRP and less than or equal to the maximum peak value EIRP

Since the above-described embodiments 1 to 4 are the predetermined method of peak EIRP, it is confirmed whether or not the peak EIRP is equal to or higher than the minimum peak EIRP even after measuring the peak EIRP at which the EIRP is the maximum.

[ Effect ]

As described above, according to the present embodiment, it is possible to determine the radiation power predetermined value in the Inter-band CA of FR2 in consideration of the case where radio waves are simultaneously radiated in a plurality of directions.

[ Change ]

< variation A >

In the variation a, as in the above-described scheme 3 or scheme 4, a method of determining a predetermined value of the maximum TRP in the case of determining the predetermined value of the radiation power of each frequency domain independently is proposed.

< protocol A1>

The scheme A1 is a scheme in which the total power of the maximum TRP in the Inter-band CA is set to be the same as the value at the time of Single carrier (Single carrier) transmission to determine a predetermined value of the maximum TRP. For example, the maximum TRP of PC3 at CA in 28GHz band and 38GHz band is 23dBm (see fig. 3). Further, a method for determining a predetermined value such as the minimum peak EIRP in the scheme A1 will be described below.

< protocol A1-1>

Scheme A1-1 is a scheme for determining a predetermined value of the minimum peak EIRP assuming the same TRP in the 28GHz band and the 38GHz band. In addition, a predetermined value of the spherical coverage EIRP is determined in accordance therewith.

< protocol A1-2>

The scheme A1-2 is a scheme for determining a predetermined value of the same minimum peak EIRP in the 28GHz band and the 38GHz band. In addition, a predetermined value of the spherical coverage EIRP is determined in accordance therewith. By making the minimum peak EIRP the same, the connectivity of CA can be improved.

< protocol A1-3>

The schemes A1 to 3 are schemes for determining a predetermined value of the minimum peak EIRP by setting the minimum peak EIRP in the 38GHz band to a value higher than the minimum peak EIRP in the 28GHz band. In addition, a predetermined value of the spherical coverage EIRP is determined in accordance therewith. Since the transmission loss in the 38GHz band is larger than that in the 28GHz band (there is a difference of the order of 2.6dB at the same distance), the connectivity of CA can be improved by increasing the minimum peak EIRP in the 38GHz band.

In addition, in the case of the schemes A1-2 and A1-3, the predetermined value may be determined based on the spherical coverage EIRP instead of the minimum peak EIRP.

Fig. 4 is a diagram showing numerical examples of the schemes A1-1 to A1-3 in the scheme A1.

Fig. 5 is a diagram showing the schemes A1-1 to A1-3 in the scheme A1 by using a mathematical formula.

< protocol A2>

The scheme A2 is a scheme in which the total power of the maximum TRP in the Inter-band CA is set to the total value of the respective values at the time of single carrier transmission to determine a predetermined value of the maximum TRP. For example, the total power of the largest TRP of PC3 in Inter-band CA for the 28GHz band and the 38GHz band is 26dBm. At this time, the allocation of EIRP in each frequency domain is set to a predetermined value of single carrier. For example, in the case of Inter-band CA in the 28GHz band and the 38GHz band, the prescribed values of the maximum TRP are 22.4dBm and 20.6dBm, respectively.

< protocol A3>

The scheme A3 is a scheme of independently determining a predetermined value of the maximum TRP in the Inter band CA in each frequency domain.

In the scheme A3, the upper limit value may be determined for the total power of the TRP in each frequency domain, and the predetermined value of the maximum TRP may be determined independently in each frequency domain. For example, the maximum TRP in the Inter-band CA of the 28GHz band is set to 23dBm, and the maximum TRP in the Inter-band CA of the 38GHz band is set to 23dBm.

In addition, in the embodiments A1 and A2, the total power of the maximum TRP may be calculated, based on the determination of the upper limit value for the predetermined value of the maximum TRP in each frequency domain. For example, the total power of the largest TRP in Inter-band CA in the 28GHz band and the 38GHz band is set to 26dBm.

< variation B >

In the above description, the method of determining the radiation power predetermined value is described taking the case where Inter-band CA is performed using two separate frequency domains of the 28GHz band and the 38GHz band as an example. The present disclosure can also be applied to a case where Inter-band CA is performed using an operating band (operating band) belonging to the same frequency domain (28 GHz band or 38GHz band), or using two operating bands that partially overlap.

In the variation B, a method of determining a predetermined value of the maximum peak EIRP and a predetermined value of the maximum TRP in consideration of the relation between the operating frequency bands of the two CCs constituting the Inter-band CA is proposed.

< protocol B1>

As described above, in 3GPP, n257, n258, and n261 are defined as operating bands belonging to the 28GHz band, and n259 and n260 are defined as operating bands belonging to the 38GHz band.

The scheme B1 is a scheme in which, when the operating frequency bands of two CCs constituting the Inter-band CA belong to the same frequency band and belong to different frequency bands, the determination method of the predetermined value of the maximum peak EIRP and the predetermined value of the maximum TRP are made different. For example, when the operating frequency bands of the two CCs are n260 and n261 and belong to different frequency domains, a predetermined value (for example, 43 dBm) of the maximum peak EIRP and a predetermined value (for example, 23 dBm) of the maximum TRP are independently determined in the operating frequency bands of the CCs. When the operating frequency bands of the two CCs are n259 and n260 and belong to the same frequency domain, the total power of the maximum value of the EIRP of the operating frequency band of each CC is determined as the predetermined value of the maximum peak EIRP, and the total power of the maximum value of the TRP of the operating frequency band of each CC is determined as the predetermined value of the maximum TRP.

The maximum peak EIRP and the upper limit value of the maximum TRP are considered and set by taking the influence on the interference of the adjacent system using the near frequency as one factor. Therefore, when the operating frequency bands of two CCs constituting the Inter-band CA belong to the same frequency domain, it is preferable to determine the predetermined value of these items by the total power of the maximum peak EIRP and the maximum TRP. On the other hand, when the operating frequency bands of the two CCs belong to different frequency domains, the predetermined values of these items may be determined independently.

< protocol B2>

The scheme B2 is a scheme in which, when the operating frequency bands of two CCs constituting the Inter-band CA overlap and separate, the determination method of the predetermined value of the maximum peak EIRP and the predetermined value of the maximum TRP are made different. For example, when the operating frequency bands of two CCs are separated, a predetermined value of the maximum peak EIRP and a predetermined value of the maximum TRP are set independently in each of the operating frequency bands of the CCs. When the operating frequency bands of the two CCs overlap, the total power of the maximum value of the EIRP of the operating frequency band of each CC is determined as a predetermined value of the maximum peak EIRP, and the total power of the maximum value of the TRP of the frequency domain of each CC is determined as a predetermined value of the maximum TRP.

In addition, "the operation frequency bands of two CCs overlap" means that: the case where the operating frequency bands of both CCs are the same, and the case where the upper end frequency of the operating frequency band of the lower center frequency is higher than the lower end frequency of the operating frequency band of the higher center frequency. On the other hand, the term "separation of the operating frequency bands of the two CCs" refers to a case where the upper end frequency of the operating frequency band of the lower center frequency is equal to or lower than the lower end frequency of the operating frequency band of the higher center frequency.

< protocol B3>

The scheme B3 is a scheme of a determination method in which a predetermined value of the maximum peak EIRP and a predetermined value of the maximum TRP are set based on other signaling associated with Inter-band CA. As the "other signaling", for example, capability (Capability) information indicating whether the control of the beam between CCs constituting the Inter-band CA is independent or integral is cited.

[ Effect of Change B ]

As described above, according to modification B, it is possible to determine the radiation power prescribed value in the Inter-band CA of FR2 in consideration of the relation of the operating frequency bands of the two CCs.

In addition, in the case of Single carrier (Single carrier) transmission, the above proposal can also be applied as a terminal-oriented rule for performing Multi-beam (Multi beam) radiation.

The above proposal can be applied to the regulation of Peak (Peak) EIS (effective isotropic sensitivity (Effective Isotropic Sensitivity)) or Peak reference sensitivity (Peak reference sensitivity) and EIS sphere coverage (spherical coverage) in Inter-band DL CA.

The embodiments of the present disclosure have been described above.

(hardware construction)

The block diagrams used in the description of the above embodiments show blocks of functional units. These functional blocks (structural units) are realized by any combination of at least one of hardware and software. The implementation method of each functional block is not particularly limited. That is, each functional block may be realized by one device physically or logically combined, or two or more devices physically or logically separated may be directly or indirectly connected (for example, by a wire, a wireless, or the like) and realized by the plurality of devices. The functional blocks may also be implemented by combining the above-described device or devices with software.

The functions include, but are not limited to, judgment, decision, judgment, calculation, processing, derivation, investigation, search, confirmation, reception, transmission, output, access, resolution, selection, establishment, comparison, assumption, expectation, view, broadcast (broadcast), notification (notification), communication (communication), forwarding (forwarding), configuration (configuration), reconfiguration (reconfiguration), allocation (mapping), assignment (assignment), and the like. For example, a functional block (structural unit) that performs a transmission function may also be referred to as a transmission unit (transmitting unit) or a transmitter (transmitter). As described above, the implementation method is not particularly limited.

For example, a base station, a user terminal, and the like in one embodiment of the present disclosure may also function as a computer that performs the processing of the wireless communication method of the present disclosure. Fig. 6 is a diagram showing an example of a hardware configuration of the base station 10 and the terminal 20 according to one embodiment of the present disclosure. The base station 10 and the terminal 20 may be physically configured as computer devices including a processor 1001, a Memory (Memory) 1002, a Storage (Storage) 1003, a communication device 1004, an input device 1005, an output device 1006, a bus 1007, and the like.

In the following description, the expression "means" may be replaced with a circuit, a device, a unit, or the like. The hardware configuration of the base station 10 and the terminal 20 may be configured to include one or more of the devices shown in the drawings, or may be configured to not include a part of the devices.

Each function of the base station 10 and the terminal 20 is realized by, for example, reading specific software (program) into hardware such as the processor 1001 and the memory 1002, and performing an operation by the processor 1001 to control communication via the communication device 1004, or to control at least one of reading and writing of data in the memory 1002 and the storage 1003.

The processor 1001 controls the entire computer by operating an operating system, for example. The processor 1001 may be configured by a central processing unit (CPU: central Processing Unit)) including an interface with peripheral devices, a control device, an arithmetic device, a register, and the like. For example, the control units 101, 201, and the like described above may also be implemented by the processor 1001.

Further, the processor 1001 reads a program (program code), a software module, data, or the like from at least one of the memory 1003 and the communication device 1004 to the memory 1002, and executes various processes according to them. As the program, at least a part of the program causing a computer to execute the operations described in the above-described embodiments is used. For example, the control units 101 and 102 of the base station 10 and the terminal 20 may be realized by control programs stored in the memory 1002 and operated by the processor 1001, and the same may be realized for other functional blocks. The above-described various processes are described as being performed by one processor 1001, but may be performed simultaneously or sequentially by two or more processors 1001. The processor 1001 may also be mounted by more than one chip. In addition, the program may be transmitted from the network via an electric communication line.

The Memory 1002 is a computer-readable recording medium, and may be configured of at least one of ROM (Read Only Memory), EPROM (erasable programmable Memory ROM (Erasable Programmable ROM)), EEPROM (electrically erasable programmable Read Only Memory ROM (Electrically Erasable Programmable ROM)), RAM (random access Memory (Random Access Memory)), and the like. The memory 1002 may also be referred to as a register, a cache, a main memory (main storage), or the like. The memory 1002 can store programs (program codes), software modules, and the like that can be executed to implement the wireless communication method according to one embodiment of the present disclosure.

The storage 1003 is a computer-readable recording medium, and may be configured of at least one of compact disk (optical disk such as CD-ROM (Compact Disc ROM)), hard disk drive, floppy disk, magneto-optical disk (for example, compact disk, digital versatile disk, blu-ray (registered trademark) disk), smart card, flash memory (for example, card, stick, key drive), floppy (flowpy) (registered trademark) disk, magnetic stripe, and the like.

The communication device 1004 is hardware (transmission/reception device) for performing communication between computers via at least one of a wired network and a wireless network, and is also referred to as, for example, a network device, a network controller, a network card, a communication module, or the like. In order to achieve at least one of frequency division duplexing (FDD: frequency Division Duplex) and time division duplexing (TDD: time Division Duplex), for example, the communication device 1004 may also be configured to include a high frequency switch, a duplexer, a filter, a frequency synthesizer, or the like. For example, the transmitting means 102 and 202, the receiving means 103 and 203, the measuring means 204, and the like may be realized by the communication device 1004.

The input device 1005 is an input apparatus (for example, a keyboard, a mouse, a microphone, a switch, a button, a sensor, or the like) that accepts an input from the outside. The output device 1006 is an output apparatus (for example, a display, a speaker, an LED lamp, or the like) that performs output to the outside. The input device 1005 and the output device 1006 may be integrated (for example, a touch panel).

The processor 1001, the memory 1002, and other devices are connected by a bus 1007 for communicating information. The bus 1007 may be formed using a single bus or may be formed using different buses between devices.

The base station 10 and the terminal 20 may be configured to include hardware such as a microprocessor, a digital signal processor (DSP: digital Signal Processor), an ASIC (application specific integrated circuit (Application Specific Integrated Circuit)), a PLD (programmable logic device (Programmable Logic Device)), and an FPGA (field programmable gate array (Field Programmable Gate Array)), and part or all of the functional blocks may be realized by the hardware. For example, the processor 1001 may also be installed using at least one of these hardware.

(notification of information, signaling)

The notification of information is not limited to the embodiments described in the present disclosure, and may be performed using other methods. For example, the notification of information may also be implemented by physical layer signaling (e.g., DCI (downlink control information (Downlink Control Information)), UCI (uplink control information (Uplink Control Information)), higher layer signaling (e.g., RRC (radio resource control (Radio Resource Control)) signaling, MAC (medium access control (Medium Access Control)) signaling, broadcast information (MIB (master information block (Master Information Block)), SIB (system information block (System Information Block)))), other signals, or a combination thereof. The RRC signaling may be referred to as an RRC message, or may be, for example, an RRC connection setup (RRC Connection Setup) message, an RRC connection reconfiguration (RRC Connection Reconfiguration)) message, or the like.

(adaptation system)

The various aspects/embodiments described in the present disclosure can also be applied to at least one of systems using LTE (long term evolution (Long Term Evolution)), LTE-a (LTE-Advanced), SUPER 3G, IMT-Advanced, 4G (fourth generation mobile communication system (4 th generation mobile communication system)), 5G (fifth generation mobile communication system (5 th generation mobile communication system)), FRA (future Radio access (Future Radio Access)), NR (New Radio), W-CDMA (registered trademark), GSM (registered trademark), CDMA2000, UMB (Ultra mobile broadband (Ultra Mobile Broadband)), IEEE 802.11 (Wi-Fi (registered trademark)), IEEE 802.16 (WiMAX (registered trademark)), IEEE 802.20, UWB (Ultra-WideBand)), bluetooth (registered trademark), other suitable systems, and next generation systems extended based on them. In addition, a plurality of systems (for example, a combination of 5G and at least one of LTE and LTE-a) may be applied in combination.

(treatment Process, etc.)

The processing procedure, timing, flow chart, and the like of each embodiment/mode described in the present disclosure may be changed in order as long as they are not contradictory. For example, for each method described in this disclosure, elements of the various steps are presented using an illustrated order, but are not limited to the particular order presented.

(operation of base station)

In the present disclosure, it is assumed that a specific operation performed by a base station is sometimes performed by an upper node (upper node) thereof according to circumstances. It is apparent that in a network composed of one or more network nodes (network nodes) having a base station, various operations performed for communication with a terminal may be performed by at least one of the base station and other network nodes (e.g., considering MME or S-GW, etc., but not limited thereto) other than the base station. In the above, the case where other network nodes than the base station are one is exemplified, but a combination of a plurality of other network nodes (e.g., MME and S-GW) is also possible.

(direction of input and output)

Information, signals, etc. may be output from a higher layer (or lower layer) to a lower layer (or higher layer). Or may be input and output via a plurality of network nodes.

(processing of input/output information and the like)

The input/output information and the like may be stored in a specific location (for example, a memory), or may be managed using a management table. The input/output information and the like may be rewritten, updated, or added. The outputted information and the like may also be deleted. The entered information and the like may also be transmitted to other devices.

(determination method)

The determination may be performed based on a value (0 or 1) represented by 1 bit, based on a true or false value (Boolean), or based on a comparison of values (e.g., with a specific value).

(software)

Software, whether referred to as software, firmware, middleware, microcode, hardware description language, or by other names, should be broadly interpreted as meaning instructions, instruction sets, code segments, program code, programs, subroutines, software modules, applications, software packages, routines, subroutines, items (objects), executable files, executable threads, procedures, functions, and the like.

In addition, software, instructions, information, etc. may also be transmitted and received via a transmission medium. For example, in the case where software is transmitted from a website, server, or other remote source (remote source) using at least one of a wired technology (coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL: digital Subscriber Line), etc.) and a wireless technology (infrared, microwave, etc.), at least one of the wired technology and the wireless technology is included in the definition of transmission medium.

(information, signal)

Information, signals, etc. described in this disclosure may also be represented using any of a variety of different technologies. For example, data, instructions, commands, information, signals, bits, symbols, chips (chips), and the like may be referenced throughout the above description may be represented by voltages, currents, electromagnetic waves, magnetic fields or particles, optical fields or photons, or any combination thereof.

In addition, each term described in the present disclosure and terms necessary for understanding the present disclosure may be replaced with terms having the same or similar meaning. For example, at least one of the channel and the symbol may be a signal (signaling). In addition, the signal may also be a message. In addition, the component carrier (CC: component Carrier) may also be referred to as a carrier frequency, a cell, a frequency carrier, etc.

("System", "network")

The terms "system" and "network" as used in this disclosure may be used interchangeably.

(parameter, channel name)

The information, parameters, and the like described in the present disclosure may be expressed by absolute values, relative values to a specific value, or corresponding additional information. For example, the radio resource may be indicated by an index.

The names used in the above parameters are not limiting names in all respects. Further, the numerical formulas and the like using these parameters are also sometimes different from those explicitly disclosed in the present disclosure. The various channels (e.g., PUCCH, PDCCH, etc.) and information elements can be identified according to any suitable names, and thus the various names assigned to these various channels and information elements are not limiting names in all respects.

(base station)

In the present disclosure, terms such as "Base Station", "radio Base Station", "fixed Station", "NodeB", "eNodeB (eNB)", "gndeb (gNB)", "access point", "transmission point (transmission point)", "reception point", "transmission/reception point", "cell", "sector", "cell group", "carrier", "component carrier", and the like may be used interchangeably. Base stations are also sometimes referred to by the terms macrocell, microcell, femtocell, picocell, and the like.

The base station can accommodate one or more (e.g., three) cells. In the case of a base station accommodating multiple cells, the overall coverage area of the base station can be divided into multiple smaller areas, each of which can also provide communication services through a base station subsystem (e.g., a small-sized base station for indoor use (RRH: remote Radio Head)), the term "cell" or "sector" refers to a portion or the entirety of the coverage area of at least one of the base station and the base station subsystem that is in communication service within that coverage area.

(terminal)

In the present disclosure, terms of "Mobile Station", "User terminal", "User Equipment", "terminal", and the like may be used interchangeably.

In some cases, a mobile station is also referred to by those skilled in the art as a subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless terminal, remote terminal, handheld device, user agent, mobile client, or a number of other suitable terms.

(base station/mobile station)

At least one of the base station and the mobile station may be referred to as a transmitting apparatus, a receiving apparatus, a communication apparatus, or the like. At least one of the base station and the mobile station may be a device mounted on the mobile body, the mobile body itself, or the like. The moving body may be a vehicle (e.g., a car, an airplane, etc.), an unmanned moving body (e.g., an unmanned plane, an automated guided vehicle, etc.), or a robot (manned or unmanned). In addition, at least one of the base station and the mobile station further includes means that is not necessarily mobile when in communication operation. For example, at least one of the base station and the mobile station may be an IoT (internet of things (Internet of Things)) machine such as a sensor.

In addition, the base station in the present disclosure may be replaced with a user terminal. For example, the various aspects/embodiments of the present disclosure may also be applied to a structure in which communication between a base station and a user terminal is replaced with communication between a plurality of user terminals (for example, may also be referred to as D2D (Device-to-Device)), V2X (Vehicle-to-evaluation), or the like. In this case, the functions of the base station 10 may be configured to be possessed by the user terminal 20. Further, words such as "upstream" and "downstream" may be replaced with words (e.g., "side") corresponding to communication between terminals. For example, the uplink channel, the downlink channel, and the like may be replaced with side channels.

Likewise, the user terminal in the present disclosure may be replaced with a base station. In this case, the function of the user terminal may be configured to be possessed by the base station.

(meaning and interpretation of terms)

The terms "determining", "deciding" and "deciding" used in the present disclosure include various operations in some cases. "judging", "deciding" may include cases where, for example, judgment (computing), calculation (computing), processing (processing), derivation (development), investigation (investigation), search (lookup), search, inquiry (query)) (e.g., search in a table, database, or other data structure), confirmation (evaluation), etc., are regarded as being "judging", "deciding", etc. Further, "determining", "deciding" may include a case where reception (e.g., receiving information), transmission (e.g., transmitting information), input (input), output (output), access (processing) (e.g., accessing data in a memory) is regarded as "determining", "deciding", or the like. Further, "judging" and "deciding" may include a case where resolution (resolution), selection (selection), selection (setting), establishment (establishment), comparison (comparison), and the like are regarded as "judging" and "deciding" are performed. That is, "judging" or "deciding" may include a case where "judgment" or "deciding" is regarded as being made for some operations. The "judgment (decision)" may be replaced with "assumption", "expectation", "consider", or the like.

The terms "connected", "coupled", or all variations thereof mean all direct or indirect connections or couplings between 2 or more elements, and can include cases where 1 or more intermediate elements exist between 2 elements "connected" or "coupled" to each other. The combination or connection of the elements may be physical, logical, or a combination thereof. For example, "connected" may also be replaced by "connected". As used in the present disclosure, it is contemplated that at least one of 1 or more wires, cables, and printed electrical connections may be used, and as several non-limiting and non-inclusive examples, two elements may be "connected" or "joined" to each other using electromagnetic energy or the like having wavelengths in the wireless frequency domain, the microwave region, and the optical (both visible and invisible) region.

The reference signal can also be abbreviated as RS (Reference Signal) and can also be referred to as Pilot (Pilot) or the like depending on the standard applied.

The term "based on" as used in the present disclosure does not mean "based only on" unless otherwise specified. In other words, the expression "based on" means "based only on" and "based at least on" both.

References to elements in the designations "first," "second," etc. used in this disclosure do not fully define the amount or order of those elements. These designations may be used throughout this specification as a convenient method of distinguishing between 2 or more elements. Thus, reference to first and second elements does not indicate that only 2 elements may be employed, or that the first element must take precedence over the second element in any manner.

The expression "part" in the structure of each apparatus described above may be replaced with "unit", "circuit", "device", or the like.

In the present disclosure, where "include", "including", and variations thereof are used, these terms are meant to be inclusive as the term "comprising". Further, the term "or" as used in this disclosure does not refer to exclusive or.

A radio frame may also be made up of one or more frames in the time domain. In the time domain, one or more of the frames may also be referred to as subframes. A subframe may also be formed of one or more slots in the time domain. The subframe may also be a fixed length of time (e.g., 1 ms) independent of the parameter set (numerology).

The parameter set may also be a communication parameter applied in at least one of transmission and reception of a certain signal or channel. The parameter set may also represent at least one of, for example, a subcarrier spacing (SCS: sub Carrier Spacing), a bandwidth, a symbol length, a cyclic prefix length, a transmission time interval (TTI: transmission Time Interval), a number of symbols per TTI, a radio frame structure, a specific filtering process performed by a transceiver in a frequency domain, a specific windowing (windowing) process performed by the transceiver in a time domain, and the like.

A slot may also be formed in the time domain by one or more symbols, OFDM (orthogonal frequency division multiplexing (Orthogonal Frequency Division Multiplexing)) symbols, SC-FDMA (single carrier frequency division multiple access (Single Carrier Frequency Division Multiple Access)) symbols, etc. A time slot may also be a time unit based on a parameter set.

The time slot may also contain a plurality of mini-slots. Each mini-slot may also be formed of one or more symbols in the time domain. In addition, the mini-slot may also be referred to as a sub-slot. Mini-slots may also be made up of a fewer number of symbols than slots. PDSCH (or PUSCH) transmitted in a larger time unit than the mini-slot may also be referred to as PDSCH (or PUSCH) mapping type a. PDSCH (or PUSCH) transmitted using mini-slots may also be referred to as PDSCH (or PUSCH) mapping type B.

Any one of a radio frame, a subframe, a slot, a mini-slot, and a symbol represents a unit of time when a signal is transmitted. The radio frames, subframes, slots, mini-slots, and symbols may also be referred to by other names corresponding to each.

For example, 1 subframe may also be referred to as a transmission time interval (TTI: transmission Time Interval), a plurality of consecutive subframes may also be referred to as TTIs, and 1 slot or 1 mini slot may also be referred to as a TTI. That is, at least one of the subframe and the TTI may be a subframe (1 ms) in the conventional LTE, may be a period (for example, 1 to 13 symbols) shorter than 1ms, or may be a period longer than 1 ms. The unit indicating the TTI may be referred to as a slot, a mini-slot, or the like, instead of a subframe.

Here, TTI refers to a scheduled minimum time unit in wireless communication, for example. For example, in the LTE system, a base station performs scheduling for each user terminal to allocate radio resources (frequency bandwidth, transmission power, and the like that can be used in each user terminal) in TTI units. In addition, the definition of TTI is not limited thereto.

The TTI may be a transmission time unit of a data packet (transport block), a code block, a codeword, or the like subjected to channel coding, or may be a processing unit such as scheduling or link adaptation. In addition, when a TTI is given, a time period (for example, the number of symbols) in which a transport block, a code block, a codeword, or the like is actually mapped may be shorter than the TTI.

In the case where 1 slot or 1 mini slot is referred to as a TTI, 1 or more TTI (i.e., 1 or more slot or 1 or more mini slot) may be the minimum time unit for scheduling. In addition, the number of slots (mini-slot number) constituting the minimum time unit of the schedule may also be controlled.

A TTI having a time length of 1ms may also be referred to as a normal TTI (TTI in LTE rel.8-12), a normal TTI, a long TTI, a normal subframe, a long subframe, a time slot, etc. A TTI that is shorter than a normal TTI may also be referred to as a shortened TTI, a short TTI, a partial or fractional TTI, a shortened subframe, a short subframe, a mini-slot, a sub-slot, a slot, etc.

In addition, long TTIs (e.g., normal TTIs, subframes, etc.) can also be replaced with TTIs having a time length greater than 1ms, and short TTIs (e.g., shortened TTIs, etc.) can also be replaced with TTIs having a TTI length less than the long TTI and greater than 1 ms.

A Resource Block (RB) is a resource allocation unit of a time domain and a frequency domain, and may include one or more consecutive subcarriers (subcarriers) in the frequency domain. The number of subcarriers included in the RB may be the same regardless of the parameter set, and may be 12 subcarriers, for example. The number of subcarriers included in the RB may also be decided based on the parameter set.

In addition, the time domain of the RB may also contain one or more symbols, and may also be 1 slot, 1 mini slot, 1 subframe, or 1 TTI in length. 1 TTI, 1 subframe, etc. may also be each composed of one or more resource blocks.

In addition, one or more RBs may also be referred to as Physical resource blocks (PRB: physical RBs), subcarrier groups (SCG: sub-Carrier groups), resource element groups (REG: resource Element Group), PRB pairs, RB peering.

Furthermore, a Resource block may also be composed of one or more Resource Elements (REs). For example, 1 RE may be a radio resource region of 1 subcarrier and 1 symbol.

A Bandwidth Part (BWP: bandwidth Part), which may also be referred to as partial Bandwidth or the like, may also represent a subset of consecutive common RBs (common resource blocks (common resource blocks)) for a certain parameter set in a certain carrier. Here, the common RB may be determined by an index of the RB with reference to a common reference point of the carrier. PRBs may be defined by a certain BWP within which they are numbered.

BWP may include BWP for UL (ULBWP) and BWP for DL (DLBWP). For a UE, one or more BWP may also be set in one carrier.

At least one of the set BWP may be active or it may not be assumed that the UE transmits and receives a specific signal/channel outside the active BWP. In addition, "cell", "carrier", etc. in the present disclosure may also be replaced with "BWP".

The above-described structures of radio frames, subframes, slots, mini-slots, symbols, and the like are merely examples. For example, the number of subframes included in a radio frame, the number of slots per subframe or radio frame, the number of mini-slots included in a slot, the number of symbols and RBs included in a slot or mini-slot, the number of subcarriers included in an RB, the number of symbols in a TTI, the symbol length, the Cyclic Prefix (CP) length, and the like can be variously changed.

In the present disclosure, for example, in the case where an article is appended by translation as in a, an, and the in english, the present disclosure also includes the case where a noun following the article is plural.

(changes in the scheme, etc.)

The embodiments described in the present disclosure may be used alone, in combination, or switched with execution. Note that the notification of specific information (for example, notification of "X") is not limited to explicit notification, and may be performed implicitly (for example, by not notifying the specific information).

While the present disclosure has been described in detail above, it will be apparent to those skilled in the art that the present disclosure is not limited to the embodiments described in the present disclosure. The present disclosure can be implemented as modifications and variations without departing from the spirit and scope of the present disclosure, which is determined based on the description of the claims. Accordingly, the description of the present disclosure is intended for illustrative purposes and is not intended to be limiting in any way.

Industrial applicability

One aspect of the present disclosure is useful for wireless communication systems.

Description of the reference numerals

10: base station

20: terminal

101. 201: control unit

102. 202: transmitting unit

103. 203: receiving unit

204: measuring unit

Claims (6)

1. A terminal is provided with:

a control unit generating capability information including a power class of the terminal; and

a transmitting unit that transmits the capability information,

for the power class, a maximum total radiated power, max TRP, a maximum peak equivalent omni radiated power, max peak EIRP, a minimum peak equivalent omni radiated power, min peak EIRP, a sphere coverage equivalent omni radiated power, spherical coverage EIRP,

the method for determining the predetermined value of at least one of the maximum peak EIRP and the maximum TRP in Inter-band CA is based on the relation between the operating frequency bands of the two component carriers CC constituting Inter-band carrier aggregation.

2. The terminal of claim 1, wherein,

the method for determining the specified value is different between the case where the operating frequency bands of the two CCs belong to the same frequency domain and the case where the operating frequency bands belong to different frequency domains.

3. The terminal of claim 2, wherein,

in the case where the operating frequency bands of the two CCs belong to different frequency domains, the prescribed value is independently determined in the operating frequency band of each component carrier,

when the operating frequency bands of the two CCs belong to the same frequency domain, the predetermined value is determined based on the total power of the operating frequency bands of the component carriers.

4. The terminal of claim 1, wherein,

the method for determining the predetermined value is different between the case where the operation bands of the two CCs overlap and the case where the operation bands of the two CCs are separated.

5. A system is provided with:

a terminal generating capability information including a power class of the terminal and transmitting the capability information; and

a base station that receives the capability information,

for the power class, a maximum total radiated power, max TRP, a maximum peak equivalent omni radiated power, max peak EIRP, a minimum peak equivalent omni radiated power, min peak EIRP, a sphere coverage equivalent omni radiated power, spherical coverage EIRP,

The method for determining the predetermined value of at least one of the maximum peak EIRP and the maximum TRP in Inter-band CA, which is Inter-band carrier aggregation, is based on the relationship between the operating frequency bands of the two component carriers, i.e., CCs, constituting Inter-band carrier aggregation.

6. A method of communication, the method comprising,

the terminal generates capability information including the power class of the terminal, and transmits the capability information,

for the power class, a maximum total radiated power, max TRP, a maximum peak equivalent omni radiated power, max peak EIRP, a minimum peak equivalent omni radiated power, min peak EIRP, a sphere coverage equivalent omni radiated power, spherical coverage EIRP,

the method for determining the predetermined value of at least one of the maximum peak EIRP and the maximum TRP in Inter-band CA, which is Inter-band carrier aggregation, is based on the relationship between the operating frequency bands of the two component carriers, i.e., CCs, constituting Inter-band carrier aggregation.